//
//  BookProvider.h
//  MultipleInheritanceDemo
//
//  Created by apple on 2018/1/4.
//  Copyright © 2018年 WJ. All rights reserved.
//

#import <Foundation/Foundation.h>

@protocol BookPrividerProtocol <NSObject>
- (void)purchaseBookWithTitle:(NSString *)title;
@end

@interface BookProvider : NSObject
@end
